The Dikili-Çandarli Volcanics, Western Turkey: Magmatic Interactions as Recorded by Petrographic and Geochemical Features
No Thumbnail Available
Date
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Open Access Color
OpenAIRE Downloads
OpenAIRE Views
Abstract
Located in the northwestern part of the Aegean region, Dikili-Çandarli volcanic suite contains products representative for the western Anatolian Miocene volcanism. They can be divided into two main groups: the Dikili and the Çandarli groups. The Dikili group is Early-Middle Miocene in age and consists mainly of pyroclastic rocks, andesitic-dacitic lavas, lava breccia, lahar flows and associated sedimentary rocks. The lavas contain disequilibrium phenocrysts assemblages. The Çandarli group consists of Upper Miocene-Pliocene lava and sediment associations. The volcanic rocks consist mainly of rhyolitic domes and basaltic trachyandesite-basaltic andesite lavas erupted along the NW-SE- and NE-SW-trending fault systems; the faults controlled the development of the Çandarli depression. Major- and trace-element chemistry indicates that the lavas are dominantly high-K, calc-alkaline, intermediate to acidic in composition. Chemical and textural characteristics of the minerals reveal that mixing was a common process in the generation of this magma. In particular, petrography, textural evidence and crystal chemistry of the phenocrysts together with variations in rock compositions indicate that basaltic-basaltic andesitic magma intruded dacite magma and is partially hybridized with it. New petrographic and geochemical data of Dikili-Çandarli volcanics are closely similar to those of the active continental margin volcanism which are interpreted as mantle-derived magmas contaminated by crustal materials. Copyright © TÜBİTAK.
Description
Keywords
Geochemistry, Mineral chemistry, Mixing, Turkish Aegean region, Volcanism
Turkish CoHE Thesis Center URL
Fields of Science
Citation
45
WoS Q
Scopus Q
Q2
Source
Turkish Journal of Earth Sciences
Volume
16
Issue
4
Start Page
493
End Page
522